According to FX creator Steve Wang, the original version of 'Tooth Fairy' was an Angel of Death, but when script changes came in, his winged and toothy creation was jettisoned. Actor Doug Jones originally played the Tooth Fairy in Wang's incredible makeup.

In a version of the film, the creature only appears in the final act. The studio was not satisfied by this, so they brought Stan Winston in to create a new Tooth Fairy that would be seen throughout the film. The original design (by Steve Wang) bears no resemblance to the new version, although it is the basis for the McFarlane Toys figure released in 2002.

At the beginning of the film, young Kyle has two small (unexplained) scratches on the upper part of his left cheek which appear to be about an inch and a half at most. The next morning, a close-up of Kyle shows two very large (approx. 4"-5") slashes on the upper and lower portion of his cheek, as well as what may be a third across his left collar bone. In the preceding and subsequent shots, Kyle is seen with the original small scratches.

The song is called "Gunboat", by a group called Vixtrola. Because of the lack of a (popular music) soundtrack for this movie and record disputes with Vixtrola's representatives, Geffen Records, the song is not available for purchase anywhere and can only be found on Peer to Peer applications such as Limewire.